.loader {
  position: relative;
  width: 2.5em;
  height: 2.5em;
  transform: rotate(165deg);
 }
 
 .loader:before, .loader:after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  display: block;
  width: 0.5em;
  height: 0.5em;
  border-radius: 0.25em;
  transform: translate(-50%, -50%);
 }
 
 .loader:before {
  animation: before8 2s infinite;
 }
 
 .loader:after {
  animation: after6 2s infinite;
 }
 
 @keyframes before8 {
  0% {
   width: 0.5em;
   box-shadow: 1em -0.5em rgba(225, 20, 98, 0.75), -1em 0.5em rgba(111, 202, 220, 0.75);
  }
 
  35% {
   width: 2.5em;
   box-shadow: 0 -0.5em rgba(225, 20, 98, 0.75), 0 0.5em rgba(111, 202, 220, 0.75);
  }
 
  70% {
   width: 0.5em;
   box-shadow: -1em -0.5em rgba(225, 20, 98, 0.75), 1em 0.5em rgba(111, 202, 220, 0.75);
  }
 
  100% {
   box-shadow: 1em -0.5em rgba(225, 20, 98, 0.75), -1em 0.5em rgba(111, 202, 220, 0.75);
  }
 }
 
 @keyframes after6 {
  0% {
   height: 0.5em;
   box-shadow: 0.5em 1em rgba(61, 184, 143, 0.75), -0.5em -1em rgba(233, 169, 32, 0.75);
  }
 
  35% {
   height: 2.5em;
   box-shadow: 0.5em 0 rgba(61, 184, 143, 0.75), -0.5em 0 rgba(233, 169, 32, 0.75);
  }
 
  70% {
   height: 0.5em;
   box-shadow: 0.5em -1em rgba(61, 184, 143, 0.75), -0.5em 1em rgba(233, 169, 32, 0.75);
  }
 
  100% {
   box-shadow: 0.5em 1em rgba(61, 184, 143, 0.75), -0.5em -1em rgba(233, 169, 32, 0.75);
  }
 }
 
 .loader {
  position: absolute;
  top: calc(50% - 1.25em);
  left: calc(50% - 1.25em);
 }

  .icon{
    width: 50px;
    height: 50px;
    margin-top: 20px;
  }
  .btns{
    width: 60px;
    height: 30px;
    position: fixed;
    top: 5px;
    left: 300px;
    border: 0;
    border-radius: 5px;
  }
  .nav_logo{
    position: fixed;
    top: 100px;
    left: 135px;
  }